INSANELY HOT DIY Hot Air Soldering iron @ 15 Volts DC and 3.5 amps...PART II

Step 12 Cose up view of output end

As the washers are going to be stacked and glued to create the tubing I wanted, I had to make sure the heating element wire was recessed into the washer . This just makes less obstructions, turbulence inside the barrel from the passing through air and also help to isolate the hot air from comming into contact with the main outer housing scooter handle.